5.9 Liter CR Dodge Cummins 03-07 Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection

HELP!! My heat does not work right.

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Old 02-06-2019, 07:00 PM
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Default HELP!! My heat does not work right.

Been a few years since I have been here but hopefully someone can help. My truck get up temp just fine, a/c is all brand new, all blend doors are fine, heater core was cleaned out, new radiator installed.

When i turn the selector to heat I have NO heat. All vents modes work fine. We even put in a newer control head! When the heat isnt working after a few hours or maybe even days all of a sudden out of nowhere the heat will start blow hot air. Or if I hit a significant bump it will blow hot hair.

I have had the dash apart in shops several times and the last shop replaced everything and nothing helps.
 
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Old 02-08-2019, 09:27 PM
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Did you try this? A lot of people, my self included, just turn the temperature control **** all the way over to HEAT, or all the way over to COLD when using it. I was having the same problem, when I found out doing so causes the contacts there to burn in that one spot, when set to high. Try turning the control **** back just a little, and see if that helps. It worked for me. Give it a try.
 
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Old 02-12-2019, 07:30 PM
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Originally Posted by PEKOKITTY View Post
Did you try this? A lot of people, my self included, just turn the temperature control **** all the way over to HEAT, or all the way over to COLD when using it. I was having the same problem, when I found out doing so causes the contacts there to burn in that one spot, when set to high. Try turning the control **** back just a little, and see if that helps. It worked for me. Give it a try.
Xs 2! Worked for me too!!
 

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